<!DOCTYPE html>
<html>

<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>

<body>
    <div>hello world</div>
</body>
<script>
    // fetch("http://192.168.174.166:8080", { method: "POST", body: JSON.stringify({ "username": "zhangsan" }) })
    //     .then(res => res.text())
    //     .then(res => {
    //         console.log(res);//服务端输出res.end(req.method)
    //     })

</script>

</html>